re PR c++/53658 (internal compiler error -- segmentation fault)

/cp
2013-06-07  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/53658
	* pt.c (lookup_template_class_1): Consistently use TYPE_MAIN_DECL,
	not TYPE_STUB_DECL, to access the _DECL for a _TYPE.

/testsuite
2013-06-07  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/53658
	* g++.dg/cpp0x/alias-decl-36.C: New.

From-SVN: r199793

gcc/cp/ChangeLog

+2013-06-07  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/53658
+	* pt.c (lookup_template_class_1): Consistently use TYPE_MAIN_DECL,
+	not TYPE_STUB_DECL, to access the _DECL for a _TYPE.
+
 2013-06-06  Jason Merrill  <jason@redhat.com>
 
 	PR c++/55520

gcc/cp/pt.c

@@ -7561,7 +7561,7 @@ lookup_template_class_1 (tree d1, tree arglist, tree in_decl, tree context,
       if (CLASS_TYPE_P (template_type) && is_dependent_type)
 	/* If the type makes use of template parameters, the
 	   code that generates debugging information will crash.  */
-	DECL_IGNORED_P (TYPE_STUB_DECL (t)) = 1;
+	DECL_IGNORED_P (TYPE_MAIN_DECL (t)) = 1;
 
       /* Possibly limit visibility based on template args.  */
       TREE_PUBLIC (type_decl) = 1;

gcc/testsuite/ChangeLog

+2013-06-07  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/53658
+	* g++.dg/cpp0x/alias-decl-36.C: New.
+
 2013-06-06  Michael Meissner  <meissner@linux.vnet.ibm.com>
 	    Pat Haugen <pthaugen@us.ibm.com>
 	    Peter Bergner <bergner@vnet.ibm.com>
 
 	* gcc.target/powerpc/p8vector-builtin-1.c: New test to test
 	power8 builtin functions.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-builtin-2.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-builtin-3.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-builtin-4.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-builtin-5.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-builtin-6.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-builtin-7.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-vectorize-1.c: New
+	* gcc.target/powerpc/p8vector-builtin-2.c: Likewise.
+	* gcc.target/powerpc/p8vector-builtin-3.c: Likewise.
+	* gcc.target/powerpc/p8vector-builtin-4.c: Likewise.
+	* gcc.target/powerpc/p8vector-builtin-5.c: Likewise.
+	* gcc.target/powerpc/p8vector-builtin-6.c: Likewise.
+	* gcc.target/powerpc/p8vector-builtin-7.c: Likewise.
+	* gcc.target/powerpc/p8vector-vectorize-1.c: New
 	tests to test power8 auto-vectorization.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-vectorize-2.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-vectorize-3.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-vectorize-4.c: Likewise.
-	* gcc/testsuite/gcc.target/powerpc/p8vector-vectorize-5.c: Likewise.
+	* gcc.target/powerpc/p8vector-vectorize-2.c: Likewise.
+	* gcc.target/powerpc/p8vector-vectorize-3.c: Likewise.
+	* gcc.target/powerpc/p8vector-vectorize-4.c: Likewise.
+	* gcc.target/powerpc/p8vector-vectorize-5.c: Likewise.
 
 	* gcc.target/powerpc/crypto-builtin-1.c: Use effective target
 	powerpc_p8vector_ok instead of powerpc_vsx_ok.

gcc/testsuite/g++.dg/cpp0x/alias-decl-36.C

+// PR c++/53658
+// { dg-do compile { target c++11 } }
+
+struct A;
+template <typename> using Foo = const A;
+template <typename Item> Foo <Item> bar();